Propeller and driving means therefor.



v G. A. KRANTZ.

PROPELLER AND DRIVING MEANS THEREFOR.

APPLICATION FILED JULY 15, 1912.

1,1 1 9,178, Patented Dec. 1,1914.

2 SHEETS-SHEBT 1.

G. A. KRANTZ.

PROPBLLEB AND DRIVING MEANS THEREFOR.

APPLICATION FILED JULY 15, 1912.

1,119,178. Patented Dec. 1,1914.

2 sunk-Sum a.

CARL A. KBAN'IZ, OI CHICAGO, ILLINOIS.

PROPELLEB AND DRIVING MEANS THEREFOR.

Specification of Letters Patent.

Patented Dec. 1, 1914.

Application filed. July 15, 1912. Serial No. 709,371.

To all whom it may concern:

Be it known that I, CARL A. KRANTZ, a subject ofthe King of Sweden, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Propellers and Driving Means Therefor, of which the following is a description.

My invention belongs to that general class of devices known as propellers and driving means therefor, and relates particularly to what may be termed a turbine ropeller for use on boats, torpedoes, aero anes, or the like, or wherever found app icabl'e. With my improved propeller the propeller itself is substantially a turbine, and the fluid for driving the propeller passes out and assists in driving the vessel or vehicle in the form of a jet,'so that the propulsion is brought about both by the propeller and by the jet.

The invention has among its objects the production of a device of the kind described that is simple, compact, efficient, powerful and satisfactory, and that may be manufactured and operated at comparatively small cost.

To this end my invention consists in the novel construction, arrangement and combination of parts herein shown and described, and more particularly pointed out in the claims.

In the drawings, wherein like reference characters indicate like or corresponding parts, Figure 1 is a partial sectional view of my improved propeller, showing it applied to a boat or the like. Fig. 2 is substantially a side elevation of the same provided with a suitable source of fluid supply. Fig. 3 is a sectional view through the propeller and hub. Fig. 4 is also a sectional view and partial elevation of the same, a portion of the propeller blade removed. Fig. 5 is a sectional view taken substantially on line 5, 5 of Fig. 4, and Fig. 6 is a similar sectional view of a modified construction.

Referring to the drawings, particularly Figs. 3, 4 and 5, 1 represents a suitable hub provided with a chamber 2 therein, having an inlet 3, which may be threaded as at 4 for the purpose hereafter described. The hub is preferably formed with a projecting part 5 in the chamber 2, so as to form defleeting surfaces 6. Arranged on the hub are any number of blades-7. Each blade 7 is preferably formed with a chamber 8 therein, one-half of the blade, as shown at 7 being made separable and suitably secured to the other part. A partition 9 divides the chamber 8 into two parts, the one at the hub being substantially a distributing chamber. Extending from the partition 9 and open to the distributing chamber 8 proximate the hub, are arranged a plurality of pipes or tubes 10, which form ducts from the chamber 8 at the hub. The tubes or ipes preferably extend substantially radial y from the hub, and thence are bent at an angle and brought to the exterior of the blade. They are preferabl turned substantially in the direction of t e axis of rotation of the hub and brought to the rear edge of the blade. It may be mentioned that the particular bend or angle may be as desired, the same depending upon the particular shape of the blade as well as the size of the same. Hence I do not wish to be understood as confining myself to any particular angle or shape of bend, as this angle, as before mentioned, will depend upon the blade and will be such as to give the most efficient working of the device. It may also be mentioned that the tubes need not be uniform in cross sectional area, but may vary in size or shape, as found desirable. The removable part 7 may be secured on the part 7 by rivets 11, or their equivalents for the purpose.

In Fig. 6 I show the blade 12 formed intogral with the ducts 14 formed substantially as the pipes or tubes 10. With this form the blade may be cast, the ducts 14 being cored in the usual manner. The ducts should be arranged so that when a fluid under pressure is discharged into the chamber 2, it will pass through the outlets 8' into the distributing chambers 8, and thence through the partition 9 and tubes 10 (or ducts 14, as shown in Fig. 6) out to the exterior of the blade at 10'. As the same passes through the ducts it drives or rotates the propeller similar to the ordinary turbine. As the fluid is discharged in the form of jets, it also tends to force the propeller head through the water, so that the rotating propeller and jets propel the boat or other vehicle.

In Fig. 1, I have shown how'the device may be applied to a boat and arranged so that the boat may be steered or backed up reversing the propeller, i. a, turning it about its vertical support, 41 representing the bottom of the boat. As shown, a pipe 15 is extended in the inlet 3 in the hub and secured thereto, the same being threaded so .maybe as to engage the threads 4 on the hub. The pipe 15 may be provided with a lock nut 16, so that the two are locked together, and with a shoulder 17 havin a face 18 adapted to fit tightly against a ace 17', on a casing 19.

n oil space 13 may be arranged in casing 19, as shown, if desired. The casing 19 is preferably extended as at 20 and ormed with a chamber 21 therein and a duct 22 in the extension 20. The tube or pipe 15 is secured in the casing 19 b lock nuts 27 and 28, 24 being a plate which ears against the surface 23, and 25 ball bearings arranged between the plates 24 and the late 26. With this construction the prope ler pipe 15 is free to rotate in the casing with comparatively little friction. To connect the duct 22 in extension 20 with the interior 15 of the pipe 15, I preferably provide a part 29 having a pipe 30 therein, the interior 31 of the pipe connecting the duct 22 and interior 15 of the pipe. The art 29 is formed with an end 32, which, or convenience, may have a lug 33 in the form of a nut, so that the same may be easily unscrewed from the casing 19. As most clearly shown in Fig. 1, the two parts are provided with cooperating seats at 34. r

A pipe 37 having a duct38 is connected to the duct 22, the pipe 37 being. surrounded by a casin 36 preferably secured to the extended en 35 of the extension 20. The casing 36 is arranged to rotate about the pipe 37 as desired, thereby moving the propeller transversely to steer or to reverse the propeller, so that the boat will be driven astern. As shown, casing 36 is (provided with an extendedpart 44 arrange to set against a stationary part 42. The part 42 is extended as at 43, the same being provided with a bearing face 43'. Nuts 45 arranged on the easing 36 bear against the bearing 43. and support 'the device substantially as shown. f desired, the part 42 may be extended upwardly as at 46 and provided with an additional bearing 43* for-the casing 36. Arranged between the extensions 43 and 43' provided a worm wheel 47 arranged to mesh with a worm 48 arranged on the shaft 49, the shaft 49 and worm being carried by the plate 46. 'As isobvious, as the shaft 49 is rotated. the-worm wheel 47, and consequently casing 36and' extension 20, are rotated so that the the desired distance, for example in a complete circle, if desired;

In Fig. 2 I show the pipe 87 connected with the pipe 50, which connects with pipe 51, extending from a suitable source of fluid supply 53. 52 ing a controlling valve or throttle. The receptacle 53 may be for any suitable source of power, as for example what is known as a flash steam boiler, a-com- 'presed air tank or' a water tank containing ntsrmnder pressure. Inthe operation of propeller is swung around rotatable the device, assuming that the throttle 52 is open, fluid under pressure, as for example, steam, is admitted through the pipes 51, 50, 37 to the duct 22, and passes into the chamber 2 into the hub of the propeller. It is deflected by the deflecting surfaces 6 into the blade inlets 8' and passes through the distributing chambers 8 in the blades into the several ducts and to the exterior of the blades. As it passes through the ducts it tends to rotate the propeller and pipe 15 carried by the casing 19, driving the vessel head, the escaping fluid or jets from the edge of the blade at the same time tending to force the propeller through the water. It will thus be seen, as previously mentioned, that the device is substantially a turbine propeller and a jet propeller combined. I

ave particularly shown the device as ap-,

plied to a boat or other conveyance for use on water, but the same may be used wherever found applicable.

Having thus described my invention, it is obvious that various immaterial modifications may be made in the same without departing from the s irit of my invention, hence I do not wis to be understood as limiting; myself to the exact form, construction, arrangement or combination of parts herein shown and described, or uses mentioned.

What I claim as new and desire to secure by Letters Patent is 1. In a device of the kind described and in combination, a ropeller comprising a chambered hub and a plurality of chambered blades extended from said hub, said blade chambers connected with said hub chamber, each blade provided with a plurality of ducts extended lengthwise the blade from said chamber, and thence at an angle to the exterior of the blade at the rear ed thereof, a pipe secured to said hub an extending along the axis of rotation thereof, a casing surrounding said pipe and extending transversely at the free end of saidpipe, said casing extension provided with an opening therethrough connected with said free end of said casing extension, a casing arranged about said last mentioned pipe an thereabout, said casing'secured to said first mentioned casing extension, and means for supplying a fluid under pressure to said last mentioned pipe.

2. A'device of the kind described comprising a chambered hubprovided with an inlet, a pair of chambered blades secured tosaid hub on opposite sides thereof and extending substantially radially from the hub, the chambers in said blades commnicating with said hub chamber. means arranged in said hub chamber for directing the passage of fluid into the chambers in said blades,

a plurality of 'pipes arranged in each of pipe, a pipe extended from the said blades, said pipes extending from proximate the hub toward the outer end thereof, and thence bent rearwardly, the inner ends of said pipes communicating with the chambers in their respective blades, and the outer ends open at the exterior of the blades at the rear edge thereof.

3. A device of the kind described comprising a chambered hub provided with an inlet, a pair of blades secured to said hub on opposite sides thereof and extending,

substantially radially from the hub, each blade comprising separable parts, one part being secured to the hub, means for securing the other part to the part secured to said hub, a plurality of pipes arranged in each blade communicating with the hub chamber, said pipes extendingfrom the hub end of the blade toward the outer end thereof, and thence bent toward the rear edge, with their outer ends arranged to discharge at the rear edge of the blade, and means arranged in said hub for directing the passage of fluid into said pipes.

4. In a device of the kind described and in combination, a propeller comprising a chambered hub provided with a 'plurality of chambered blades extending from said hub to opposite sides thereof, each blade provided with a detachable side, means for securing said detachable side to the body of the blade, a plurality of pipes arranged in each blade and extending from the hub end toward the outer end of'the blade, and bent rea rwardly with their outer ends positioned at the rear edge of the blades between the body of the blade and said detachable part.

5. In a device of the kind described and in combination, a propeller comprising a chambered hub provided with a plurality of chambered blades extending from said hub on opposite sides thereof, each blade.

ing along the axis of rotation thereof, a.

supporting casing surrounding said pipe and extending transversely at the free end of the pipe, said casing chambered at said free end of said pipe and provided with a detachable closure therefor, said casing extension provided with an opening therethrough, and means arranged in the chamber in said casing for connecting said opening and the interior of said pipe, a casing secured to said first mentioned casing extension at the end thereof, a pipe extending through said last mentioned .casing to the end thereof, said last mentioned casing rotatable about said pipe, means for rotatably supporting said last mentioned casing, means for rotating said casing about its support, and means for supplying a fluid under pressure to the pipe contained in said last mentioned casing.

In testimony whereof, I have hereunto signed my name in the presence of two subscribing witnesses.

CARL A. KRANTZ. I Witnesses:

ROY W. HILL, CHARLES I. Conn. 

